swayli94 / cfdpost

Post procedures of CFD

cfdpost

CFD post procedures.

# post

Frequently used CFD post procedures.

[ post_foil_cfl3d ]

post_foil_cfl3d(path, j0, j1, nHi=40, fname='feature2d.txt')

Read in CFL3D foil result and extract flow features.
    path:       folder that contains the output files
    j0:         j index of the lower surface TE
    j1:         j index of the upper surface TE
    nHi:        maximum number of mesh points in k direction for boundary layer
    fname:      output file name. If None, then no output
    tecplot:    if True, then convert cfl3d.prt to surface.dat

Single C-block cfl3d.prt index
    i : 1 - 1   symmetry plane
    j : 1 - nj  far field of lower surface TE to far field of upper surface TE
    k : 1 - nk  surface to far field

[ feature_xfoil ]

feature_xfoil(cst_u, cst_l, t, Minf, Re, AoA, n_crit=0.1, fname='feature-xfoil.txt')

Evaluate by xfoil and extract features. 
    cst-u, cst-l:   list of upper/lower CST coefficients of the airfoil.
    t:              airfoil thickness or None
    Minf:           free stream Mach number for wall Mach number calculation
    Re, AoA (deg):  flight condition (s), float or list, for Xfoil
    n_crit:         critical amplification ratio for transition in xfoil
    fname:  output file name. If None, then no output

Dependencies:
    cst_modeling    pip install cst-modeling3d
    xfoil           pip install xfoil

XFoil:
    Re:     Reynolds number in case the simulation is for a viscous flow. 
            In case not informed, the code will assume inviscid.
    Minf:   Mach number in case the simulation has to take in account compressibility 
            effects through the Prandtl-Glauert correlation. If not informed, 
            the code will not use the correction. For logical reasons, if Mach 
            is informed, a Reynolds number different from zero must also be informed.

[ feature_TSFoil ]

Evaluate by TSFOIL2 and extract features.
    cst-u, cst-l:   list of upper/lower CST coefficients of the airfoil
    t:      airfoil thickness or None
    Minf, Re, AoA (deg): flight condition (s), float or list
    fname:  output file name. If None, then no output

Dependencies:
    cst_modeling    pip install cst-modeling3d
    pyTSFoil        pip install pyTSFoil

# cfdresult

Read in CFD results.

cfl3d

Read in CFL3D results.

# feature2d

Extract 2D flow features.

FeatureSec

Extract flow features of airfoils or wing sections.

FeatureXfoil

Extract features from Xfoil (low speed) results.

FeatureTSFoil

Extract features from pyTSFoil (transonic speed) results.